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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <h1>问卷调查</h1>
    <form action="">
        <label for="username">用户名</label>
        <input type="text" name="" id="username">
        <br>
        <label for="password">密码</label>
        <input type="password" name="" id="password">
        <br> 性别
        <input name="sex" type="radio">
        <input name="sex" type="radio">
        <br>最喜欢的运动
        <select name="" id="">
            <option value="">篮球</option>
            <option value="">足球</option>
            <option value="">太极</option>
        </select>
        <br>
        <input type="submit">
    </form>
</body>
</html>